Feature/orphan node grouping

[jayqi]

WIP for #28

[jayqi]

Remaining issues:

• Orphan Node grouping still looks terrible with the layouts
• tree' layout has a mysterious bug where regenerating the plot will alternate between no-layout and tree-layout. For some reason this doesn't happen with circle`.

Code to test

myFuncReporter <- PackageFunctionReporter$new()
myFuncReporter$set_package('lubridate')
myFuncReporter$orphanNodeClusteringThreshold <- 3
myFuncReporter$graphLayoutType <- 'tree'
myFuncReporter$plot_network()

[jayqi]

Lubridate + tree

Lubridate + bugged no-layout

Lubridate + circle

[bburns632]

Hey @jayqi ,

I see the function plots looking terrible as a separate issue at the moment than orphan grouping. I would support merging this PR today (after updates to pass tests) and fixing the graph layouts in a later PR soon after.

[jayqi]

Weirdly it looks weird with lubridate but it works fine with something smaller like uptasticsearch. /shrug

myFuncReporter <- PackageFunctionReporter$new()
myFuncReporter$set_package('uptasticsearch')
myFuncReporter$orphanNodeClusteringThreshold <- 3
myFuncReporter$graphLayoutType <- 'tree'
myFuncReporter$plot_network()

[bburns632]

If only real life cash multiplied like pkgnet cache ...

[bburns632]

I like this. Clean and structured.

[bburns632]

@jayqi Looks good. I'm going to merge it.

For posterity, the example to run for this is:

myFuncReporter <- PackageFunctionReporter$new()
myFuncReporter$set_package('uptasticsearch')
myFuncReporter$orphanNodeClusteringThreshold <- 3
#myFuncReporter$graphLayoutType <- 'tree'
myFuncReporter$layoutType <- 'tree'
myFuncReporter$plot_network()